No stock in branches

Yoh I have been to 4branches looking for Matt stockings and all stores have small sizes or no stock at all....I went to Trade route Mall,Lenasia Signet,Protea Gardens and Protea glen,their size XXL is like a size medium....it doesnt stretch at all.....am really frustrated and disappointed and when you ask the workers they are not even interested in checking for stock at the back.....very poor customer service!